ASTROSAT CZTI

Data Quality Report

Orbit 20191121_A07_056T01_9000003330_level2

Creation date: 2019-11-27T11:57:33.990870
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_056T01_9000003330cztM0_level2_bc.evt modeM0/AS1A07_056T01_9000003330cztM0_level2_quad_clean.evt
Size (bytes)2,973,695,0401,611,354,240
Size2.8 GB 1.5 GB
Events in quadrant A17,365,84910,923,106
Events in quadrant B25,604,80511,030,247
Events in quadrant C17,778,80310,695,960
Events in quadrant D23,588,70210,407,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017060
B017060
C017060
D017060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730720
B02018750
C01770810
D01932280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A839706740.802668%
B8397027943.327379%
C8397013211.573181%
D8397015841.886388%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 104472 83969 0 0 0.00% 0.00%
B 104472 83965 466 466 0.45% 0.55%
C 104472 83964 9 9 0.01% 0.01%
D 104472 83967 293 293 0.28% 0.35%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 1 212629 219.8 4379 4311 947.8
A 6 240 125925 128.32 4379 4311 947.8
A 13 254 113544 115.25 4379 4311 947.8
B 10 245 8010995 9607.45 4412 4307 833.4
B 0 190 136877 159.07 4412 4307 833.4
B 5 172 110597 127.54 4412 4307 833.4
C 10 22 521267 515.01 4266 4248 1003.9
C 0 239 454236 448.24 4266 4248 1003.9
C 3 9 192313 187.33 4266 4248 1003.9
D 1 52 4480861 4398.5 4327 4175 1017.8
D 7 223 1295244 1268.52 4327 4175 1017.8
D 2 234 335289 325.33 4327 4175 1017.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter